why 4 to 20 ma ,why not 0 to 20 or 3 to 15 or anything

19 Answers   Honeywell, TCS, TN,

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how we will install a positioner ?

2 Answers   Descon,

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what is the difference between transmitter and smart transmitter ?

4 Answers   Aditya Birla,

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which type of zones used for boiler? & why ?

0 Answers  

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what is the differnt between open loop and close loop ?

5 Answers   India Cements,

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Why do you want to work here

0 Answers   Eskom,

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hello this is dhinakar subramanian. how to piping and instrumenation drawings and also how to create the data sheets...

1 Answers  

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Could anybody tell how much amps will a single input to plc will consume?

1 Answers  

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what is ment by PID controllers? explain with example?

2 Answers  

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what is load line in control valve?

3 Answers   Boral, Qatar Petroleums,

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explain how magnetic flowmeter works

1 Answers  

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cascade controller is feed back or feed forward or both

4 Answers  

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